Upgrade fine filter bag for the Jet DC1100CK/DC1900A dust extractors, will also fit Axminster ADE2200/4000/6000 dust extractors. 5 micron filter performance. Upgrades the performance of the extractor to handle course dusts from bandsaws ect. You must use plastic waste sacks when using these filters. Note, 2 units required for ADE4000/6000/DC1900A.